blob: 25f6a5fc01010fad0ba98a1fef86f31cfcc49329 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/*
* Barrier Manager -- Release Tasks Waitng at a Barrier
*
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/rtems/barrier.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
/*
* rtems_barrier_release
*
* This directive releases all threads waiting at a barrier.
*
* Input parameters:
* id - barrier id
* released - pointer to number of threads unblocked
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
* *released - number of threads unblocked
*/
rtems_status_code rtems_barrier_release(
rtems_id id,
rtems_unsigned32 *released
)
{
Barrier_Control *the_barrier;
Objects_Locations location;
if ( !released )
return RTEMS_INVALID_ADDRESS;
the_barrier = _Barrier_Get( id, &location );
switch ( location ) {
case OBJECTS_REMOTE:
case OBJECTS_ERROR:
return RTEMS_INVALID_ID;
case OBJECTS_LOCAL:
*released = _CORE_barrier_Release( &the_barrier->Barrier, id, NULL );
_Thread_Enable_dispatch();
return RTEMS_SUCCESSFUL;
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
|